(hacked) S7LN Group Buy

[sidehack]

Round 2 miners arrived just a bit ago. Got 'em all up and running on stock settings to make sure they're good. Barring earthquakes I should have 'em worked up, tested and dropped off at FedEx tomorrow by cheeseburger time.

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[gt_addict]

Woohoo!! 

[philipma1957]

Nice looking forward to them.

[ZedZedNova]

Nice! I have space cleared and ready. Really looking forward to it.

[sidehack]

http://eligius.st/~wizkid057/newstats/userstats.php/1CoLDs7XNi8ehyFnGWicUhgBGb7Kw42Ugi

As of now I have 8 workers all firing. The best seven will be sent out to cover round 2 and gt_addict from round 3. I figure that'll do it and then this'll probably wrap up. Phil, at least one of the miners headed to you will not have an attached PSU on account of I don't have that many I trust and you'd be taking them off anyway. I'll make sure it gets made up to you if I get some warranty replacements out of Bitmain, which I certainly hope to do since part of why I bought one in the first place was to get the PSU for other things but after this buy is taken care of I'm left with only dead ones.

[sidehack]

So most of the miners dropped at least one board overnight, which means stepping up the voltage and re-testing. I want a solid day at speed without dropouts before I'll ship, which probably means Monday. I'm not sure why this batch is so much more finicky than the last one; luck of the draw I guess. After initial tuning, none of the last batch failed overnight; this time most of them did.

[gt_addict]

No worries. It's got to be what it's got to be voltage wise. Really appreciate how thorough you're being with these miners.

[sidehack]

I just wish the thoroughness didn't come at the cost of time that's already been lost due to customs and delivery hangups. Nothing says "expected delivery June 21st" like packages showing up on June 30th, after something like 3 emails and 5 phone calls to the carrier.

[CrazyGuy]

My round 1 sidehacked S7LN has been running perfectly for the past few days. Great work Sidehack!

[sidehack]

According to the pool, all the testing miners have been running solid all day - that's pretty well 12 hours for most of 'em. Hopefully they stay solid and I don't have to mess with 'em any more and can get 'em all out on Monday. Again, sorry for the delays but I'd rather spend an extra day making sure something's right than have to fight with back-and-forth to fix problems later.

CrazyGuy - glad to hear it.

[IITravel01]

So most of the miners dropped at least one board overnight, which means stepping up the voltage and re-testing. I want a solid day at speed without dropouts before I'll ship, which probably means Monday. I'm not sure why this batch is so much more finicky than the last one; luck of the draw I guess. After initial tuning, none of the last batch failed overnight; this time most of them did.

Not likely on Monday, the 4th of July.

[sidehack]

Oh right, I keep forgetting that most people don't work on major holidays.

Also, some of the already-proven-stable miners dropped a board this morning, I think because the shop cooled off unexpectedly (lots of rain). I remember there being talk about the stock S7 having a "sweet spot" for temperature, below which they weren't stable, so I'm blaming it on that. And then turning the fans down manually.

[gt_addict]

How perculiar. The room I'm going to be keeping mine in as always around 20c so hopefully be ok.

[ZedZedNova]

I just wish the thoroughness didn't come at the cost of time that's already been lost due to customs and delivery hangups. Nothing says "expected delivery June 21st" like packages showing up on June 30th, after something like 3 emails and 5 phone calls to the carrier.

No worries @sidehack those are things beyond your control. When things are under your control you are doing what you think needs to be done, and letting us know. That always wins in my book.

Cheers,

- zed

[philipma1957]

http://eligius.st/~wizkid057/newstats/userstats.php/1CoLDs7XNi8ehyFnGWicUhgBGb7Kw42Ugi

As of now I have 8 workers all firing. The best seven will be sent out to cover round 2 and gt_addict from round 3. I figure that'll do it and then this'll probably wrap up. Phil, at least one of the miners headed to you will not have an attached PSU on account of I don't have that many I trust and you'd be taking them off anyway. I'll make sure it gets made up to you if I get some warranty replacements out of Bitmain, which I certainly hope to do since part of why I bought one in the first place was to get the PSU for other things but after this buy is taken care of I'm left with only dead ones.

No worries if you need two or three instead of the one it is fine.

Looking forward to it.

Yeah the s-9s are nice but they are noisy.

I want at least one quiet miner around.

[IITravel01]

Thought I would post a followup and let people know the results of the 2 sidehack moded S7-LN's I received and have been messing around with for a week or so.  Looks like from the wattage at the wall that I received 2 660/630 versions.  One does really well after breaking in and runs at 562.5M with only 0.0003% HW errors and the blades run 41-45 C, this one pulls about 545w at the wall on 110v AC, which runs about 2.5 TH/s.  I've switched the Enermax 1000w Gold for a EVGA 1000w Titanium on this one.  Pretty nice.  The other isn't such a hot performer.  I'm getting about 0.026% HW errors at 512.5M (meaning I'm losing about 60 GH/s at that speed, so @2.3 Th/s = 2.24 TH/s), it was getting HW errors at 500M, I didn't try any lower than that so see where it cleans up.  It runs at about the same temps and pulls about 520w at the wall at 110v AC (display shows that's about 460w 12.1v DC after the power supply).  I should have the SilverStone 800w Titanium delivered tomorrow that I'll have put on this 2nd one, which should cut about 10w when installed.  I've switched the fans so they blow the opposite direction and then replaced the Front one with a SilverStone FHP-141 v.2.  The fans run about 2,520 rpm for the OEM at the rear and 1,440 rpm for the SilverStone (I've seen the OEM fan go up to 2,640 rpm when the temp hit 46 so it appears on auto mode it works well with the fan speed increasing as the ambient temp. goes up in the room.  They are pretty close to silent with a slight whurring, but you could easily sleep in the same room with them if you wanted to.  Note that you can put the AntMiner red power switch on the front just above the network port and put the cable through the back and under the power supply for a nice clean look.  Overall, I'm pretty happy as I can put these 2 S7-LN's in the office (with 4 blades total) and take out the S7 with 3 blades and noisy fan that I've down clocked to 612.5M for 4.1 TH/s drawing about 1,200w (don't recall the exact amount).  They will run together at about 4.8 TH/s (a little than a single 3 blade S7 at full) and pull about 1,070w and be a lot closer to silent.  Note, best results I've seen is the let them run for a couple minutes after a soft reboot (I was losing ASICs and getting HW errors) after changing settings and then do a hard power off/on reboot waiting 5 seconds after all fans stop moving.  The HW errors seem to decrease if you do a hard reboot when it's warm and the lost ASIC's come back.  I"m a bit curious what the red flashing light is on the front of the AntMiner near the network port, think it might have to do with the fans (or fan speed), they both flash now (on both miners) after I replaced the fan with the SilverStone on each, but it doesn't seem to effect anything.

Also, I use the EPS power line from the power supply to run the board on top connected to the 6-pin PCI express power cable with one of these adapters.  It's especially handy with the location of the power connector under the power supply if you need to disconnect the power supply for some reason.  https://www.amazon.com/gp/product/B005H3KH9E/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1

[gt_addict]

Any updates to how you're getting on sidehack? 

[philipma1957]

Any updates to how you're getting on sidehack? 

I got a tracking notice from fedex late last night. I should have them in a day or two.

[sidehack]

Right, all the miners were shipped out yesterday afternoon. I forgot to send out tracking numbers but I can do that today.

[gt_addict]

Superb!!

Phil, let me know when you have them and we can sort out shipping